Lenovo 12JM0022US
Lenovo ThinkCentre M90a Pro Gen 4 User Manual
Model: 12JM0022US
1. Introduction
This manual provides essential information for the safe and efficient operation of your Lenovo ThinkCentre M90a Pro Gen 4 All-in-One Business PC. Please read this manual thoroughly before using the product and retain it for future reference.
The Lenovo ThinkCentre M90a Pro Gen 4 is a high-performance all-in-one desktop computer designed for business environments, featuring a 13th Generation Intel Core i5-13500 vPro Processor, a 27-inch QHD display, and Windows 11 Pro operating system.
2. Safety Information
Always follow basic safety precautions when using this product to reduce the risk of fire, electric shock, and injury to persons.
- Power Source: Use only the power adapter supplied with your device. Ensure the power outlet is properly grounded.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the device to prevent overheating.
- Liquid Exposure: Keep the device away from liquids. Do not expose it to rain or moisture.
- Cleaning: Disconnect the power cord before cleaning. Use a soft, dry cloth. Do not use liquid or aerosol cleaners.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
3. Package Contents
Verify that all items are present in the package:
- Lenovo ThinkCentre M90a Pro Gen 4 Business PC
- Wireless Keyboard
- Wireless Mouse
- Webcam
- Power Adapter
- Documentation (Quick Start Guide, Safety and Warranty Guide)
4. Product Overview
4.1 Front View
Figure 4.1: Front view of the Lenovo ThinkCentre M90a Pro Gen 4, showing the 27-inch display, integrated webcam at the top, and the stand with a red accent line at the base. A wireless keyboard and mouse are also visible.
The front of the ThinkCentre M90a Pro Gen 4 features the large 27-inch QHD display, an integrated 5MP IR/RGB webcam with dual array microphone located at the top bezel, and the ThinkCentre branding on the bottom left. The stand provides stability and includes a convenient phone docking bar.
4.2 Side Views
Figure 4.2: Left side view of the Lenovo ThinkCentre M90a Pro Gen 4, illustrating the slim profile of the display and the adjustable arm of the stand.
Figure 4.3: Right side view of the Lenovo ThinkCentre M90a Pro Gen 4, showing accessible ports including USB ports and a headphone/microphone combo jack.
The side profiles highlight the sleek design and the robust, adjustable stand. The right side of the display unit houses easily accessible ports for quick connections.
4.3 Rear View and Ports
Figure 4.4: Rear view of the Lenovo ThinkCentre M90a Pro Gen 4, displaying the Lenovo logo, ThinkCentre branding, and the comprehensive array of rear ports.
The rear of the device contains the primary connectivity ports and the main ventilation area. The stand's design also facilitates cable management.
Available Ports:
- 1x Thunderbolt 4 / USB4 40Gbps (support data transfer, 15W charging and DisplayPort 1.4)
- 2x USB 3.2 Gen 2
- 1x headphone / microphone combo jack (3.5mm)
- 1x USB-C 3.2 Gen 2 (support data transfer and 15W charging)
- 3x USB 3.2 Gen 1
- 1x HDMI (HDMI in 1.4 / HDMI out 2.1 TMDS combo port)
- 1x DisplayPort 1.4
- 1x Ethernet (RJ-45)
5. Setup
5.1 Initial Placement
Place the ThinkCentre M90a Pro Gen 4 on a stable, flat surface. Ensure there is adequate space around the device for ventilation, especially at the rear and sides.
5.2 Connecting Peripherals
- Keyboard and Mouse: The included keyboard and mouse are wireless. Insert the USB receiver (typically found in the mouse battery compartment or a small slot on the keyboard) into an available USB port on the ThinkCentre. Ensure batteries are installed in both the keyboard and mouse.
- Webcam: The webcam is integrated. No separate connection is required.
- Power Connection: Connect the power adapter to the power input port on the rear of the ThinkCentre, then plug the power cord into a grounded electrical outlet.
- Network Connection (Optional): For a wired network connection, connect an Ethernet cable from your router or modem to the RJ-45 port on the rear of the ThinkCentre. For wireless, the device supports Intel Wi-Fi 6E AX211.
5.3 First Boot and Windows Setup
Press the power button, usually located on the side or bottom bezel of the display unit. The system will boot up and guide you through the initial Windows 11 Pro setup process. Follow the on-screen instructions to configure language, region, network, and user accounts.
6. Operating the ThinkCentre M90a Pro Gen 4
6.1 Power On/Off and Sleep
- Power On: Press the power button.
- Shut Down: Click the Start button in Windows, then select Power > Shut down.
- Sleep Mode: Click the Start button in Windows, then select Power > Sleep. Alternatively, press the power button briefly.
6.2 Display Adjustments
The 27-inch QHD display features an Ultra Flex Stand, allowing for various adjustments:
- Height Adjustment: Adjust the display height by sliding it up or down along the stand.
- Tilt Adjustment: Tilt the screen forward or backward to achieve an optimal viewing angle.
- Swivel Adjustment: Rotate the display left or right on its base.
- Pivot Adjustment: The display can be rotated to a portrait orientation for specific tasks.
Figure 6.1: The Lenovo ThinkCentre M90a Pro Gen 4 display rotated into portrait mode, demonstrating its pivot capability.
6.3 Using the Integrated Camera
The 5MP IR/RGB camera supports Windows Hello for facial recognition login and is suitable for video conferencing. Ensure proper lighting for optimal performance.
6.4 Connectivity
- Wi-Fi: Connect to wireless networks via the Windows network settings.
- Bluetooth: Pair Bluetooth devices such as headphones or speakers through Windows Bluetooth settings.
- USB Ports: Use the various USB ports (Thunderbolt 4, USB 3.2 Gen 2, USB 3.2 Gen 1, USB-C 3.2 Gen 2) for connecting external drives, peripherals, and charging compatible devices.
- Video Output: Utilize the HDMI or DisplayPort 1.4 for connecting external monitors.
7. Maintenance
7.1 Cleaning
- Screen: Use a soft, lint-free cloth slightly dampened with water or a non-abrasive screen cleaner. Do not spray liquid directly onto the screen.
- Chassis: Wipe the exterior surfaces with a soft, dry cloth. For stubborn marks, a slightly damp cloth can be used, followed by a dry cloth.
- Ventilation Openings: Periodically use compressed air to clear dust from the ventilation openings to ensure proper airflow and prevent overheating.
7.2 Software Updates
Regularly check for and install operating system updates (Windows Update) and driver updates (Lenovo Vantage or Lenovo Support website) to ensure optimal performance, security, and compatibility.
7.3 Data Backup
It is recommended to regularly back up your important data to an external drive or cloud storage to prevent data loss.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power / System does not turn on | Power cable not connected; Power outlet issue; Power adapter malfunction | Ensure power cable is securely connected. Try a different power outlet. Verify power adapter is working. |
| Display is blank or black | System in sleep mode; Display settings issue; Hardware malfunction | Press any key or move mouse to wake. Check display settings in Windows. Restart the system. |
| Keyboard or mouse not responding | Low battery; USB receiver disconnected; Driver issue | Replace batteries. Re-insert USB receiver. Check device manager for driver issues. |
| No internet connection | Wi-Fi disabled; Ethernet cable loose; Router/modem issue | Check Wi-Fi settings. Ensure Ethernet cable is secure. Restart router/modem. |
| System is slow or unresponsive | Too many applications open; Low disk space; Malware; Outdated drivers | Close unnecessary applications. Free up disk space. Run antivirus scan. Update drivers. |
9. Specifications
| Feature | Detail |
|---|---|
| Processor | 13th Generation Intel Core i5-13500 vPro Processor (E-cores up to 3.50 GHz P-cores up to 4.80 GHz) |
| Memory | 16 GB DDR5-5600MHz (SODIMM) |
| Storage | 512 GB SSD M.2 2280 PCIe Gen4 Performance TLC Opal |
| Display | 27" QHD (2560 x 1440), IPS, Anti-Glare, Non-Touch, 99%sRGB, 350 nits, 60Hz, 14 ms, LED Backlights |
| Graphics | Integrated Intel UHD Graphics 770 |
| Camera | 5MP IR/RGB with Dual Array Microphone |
| Connectivity | Intel Wi-Fi 6E AX211 2x2 AX vPro & Bluetooth 5.1 |
| Operating System | Windows 11 Pro 64 |
| Ports | 1x Thunderbolt 4 / USB4 40Gbps, 2x USB 3.2 Gen 2, 1x headphone / microphone combo jack (3.5mm), 1x USB-C 3.2 Gen 2, 3x USB 3.2 Gen 1, 1x HDMI, 1x DisplayPort 1.4, 1x Ethernet (RJ-45) |
| Dimensions (H x W x D) | Approximately 24.2 × 9.9 × 18.2 inches |
| Weight | Approximately 24.8 lbs |
| Model Number | 12JM0022US |
10. Warranty and Support
Your Lenovo ThinkCentre M90a Pro Gen 4 comes with a One Year Onsite Lenovo Warranty. For detailed warranty terms and conditions, please refer to the warranty documentation included with your product or visit the official Lenovo support website.
You may be able to extend your warranty or add Lenovo Premier Support by registering your computer with Lenovo.
For technical support, driver downloads, and further assistance, please visit the official Lenovo Support website or contact Lenovo customer service.
Lenovo Support Website: support.lenovo.com